Cisco :: 4400 WLC Random Drop In Both Multicast And Broadcast On 7.0.220
May 15, 2013
We have a Cisco 4400 WLC running version 7.0.220.0 and are experiencing clients randomly dropping both broadcast and multicast at the same time. This is not specific to one area of the site and the duration of the MC/Brodacast loss varies. These comms outages don’t happen on all the clients at once but usually affect one client at a time. After a few minutes or a few hours, the client will start receiving the multicast without user intervention.
The site has Cisco 1522 AP's that have rather interesting logs where the DTLS sends fatal errors, followed by CAPWAP going into discovery state. Not sure if this has the same affect or if that's a completely seperate issue.I was told it could be the GTK but I don't believe 7.0.220 has this feature even enabled. The clients are Cisco 3230 and Cisco 1310's. The clients are running version 12.4(25d)JA1 while the 3230 router is running version 12.4(24)T7. What supporting logs or configs need to be shared to better troubleshoot. This has been going on for quite some time and is frustrating the end user as multicast is essential to the operation.
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Sep 25, 2012
I have setup the existing wifi router (couple of years ago) so do have the basic networking knowledge but am not up-to-speed with all the latest developments in the industry2. ISP have provided a '******' ADSL modem that i need to connect to get this whole netwrok working. its only supports ethernet connections - (i live in a third world country)3. I have installed a TP-link Wifi router (WR841Nd). The modem on stand-alone basis is fairly decent, covers decent range on ground floor (my house is fairly big and is double story building) but with few dead spots. It supports N series so speed is quite good as long as one is within range.
Problemi have been living with it for couple of years but since recently i have been experiencing a lot of drop-outs/random disconnections and slow speed. I have tested my wifi router at friend's place and it showed no signs of problems so it has to be my ADSL modem (phone line is fine, though i am not close to exchange but that is not an issues as my neighbours are using the same phone line/ISP and they dont have an issue)another problem i have is the coverage, my current wifi only covers the ground floor and i would like to extend this to upper portione am looking to change my ISP provided ADSL modem. The problem is i dont know if i buy an ADSL modem off amazon and whether it would work or not because the setup is not straight forward and the ISP staff is corrupt. They dont provide with quality hardware neither do they have technical competence so i literally have to beg them at time to at least come and see the problem.Question1: ISP provided ADSL modem replacementi know the settings for ISP modem so i can search how i can replicate the same with Billion but can this work?Question2: RAnge ExtenderI am thinking of buying couple of powerline wireless extenders from netgear.
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Apr 23, 2012
We are currently experiencing random multicast data dropouts on ports that are connected to a 3750X in VLAN ports. A test PC was connected to a routed port and we do not have any dropouts of the multicast data.We also took a 2960G and plugged it into VLAN ports on the 3750X. Any test PC that is on the 2960G does not lose traffic. The traffic only drops on PCs that are connected to a port on the 3750X that is in a VLAN. The data drops are random and last approximatly 55-59 seconds before we start receiving multicast traffic again.
I do not see any input/output errors on the interfacessh platform port-asic stat drop also show no drops
CPU runs at about 50% on the 3750X
Below is the configuration of the 3750X
Building configuration...
Current configuration : 8454!!version 12.2no service padservice timestamps debug datetime msecservice timestamps log datetime msecservice password-
[Code]......
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May 21, 2012
Ok so I have a Netgear dg834gb v2 and I have a disconnecting problem on a wireless connection for my laptop. When I am using my laptop, my connection will drop at random moments mostly when I'm playing League of Legends. If I'm not playing it rarely disconnects. It drops for about 10 seconds and comes back up usually, but sometimes I have to reset the router. It only recently started happening and I have no idea why. Maybe it can't handle when I'm playing?
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May 17, 2012
I have a Lenovo T420 with a Intel Centrino Advanced-N 6205 wireless network card that causes me some headache. It randomly gets disconnected from my router (Zyxel P-2601HN-F1) and home network, works fine though if i using cable. Right after it gets disconnected it reconnects and works fine until it gets disconnected again. I have an HP laptop connected at the same time and no problems there.It works fine in the network in our office (work laptop). I tried our IT dept but they were clueless and told me I had to figure it out by myself, as it works in the office..
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Dec 29, 2012
Network running about 60 computers, most of which are running windows 7 professional. Some are on a domain, some are not.At (seemingly) random times, some computer on the network will lose the ability to browse websites (including the web interfaces of networked devices). I can't identify what circumstances cause this to occur. I only find out about it when someone calls me.From the affected computer:I can ping sites I can ping our Cyberoam UTM (which acts as our DNS, DHCP, and firewall)disabling/enabling connection doesn't fix the problem releasing/renewing ip doesn't fix the problem flushing dns doesnt fix the problem uninstalled antivirus on two test machines, problem still randomly manifests.replaced the Cyberoam with newer model users have claimed that if they wait a long period of time (40+ minutes) the problem sometimes resolves.rebooting the computer resolves the issue until it randomly occurs again changing the computer's mac address also resolves the issue until it randomly occurs again.
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Apr 18, 2012
Why do we need MP-BGP (and not BGP) to exchange multicast prefixes between multicast domains?
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Feb 19, 2013
I try to pass multicast traffic between two vrf on the same 3750 switch. I have IP services IOS and sdm template routing.
here is my config:
ip routing
!
ip vrf vpn2
rd 1:1
mdt default 232.1.1.1
route-target export 1:1
route-target import 1:1
[code]....
Now I'm stuck - I don't know what to do to pass multicast traffic. Do I have any chance to run this config on 3750 chassis?Perhaps "Configuring Multicast VPN Extranet Support" document will be useful, but it concerns Catalyst 6500? [URL]
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Apr 3, 2011
I found [URL] that it's possible to create IPSec between WLC and MS IAS server. Is it possible to use ACS 5.2 instead of IAS and establish IPsec between WLC and ACS?
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Apr 26, 2012
We have a Cisco 4400 series WLAN controller.When I go to the clients and view who is connected; I can also filter it. However it only lets me filter by mac address, ap, wlan profile, etc.
It does not have IP filtering. Is there a way to filter using IP? Basically I want to find a particular client with a certain IP that's connected to our WLAN.Also how do we block the client? If we deemed that person should not get access.
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Oct 8, 2012
Why do we need them? Could we leave the LAN with a subnet broadcast packet (for instance with an address of 192.168.1.255 /24). Are those addresses used for something?
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Mar 14, 2013
Trying to find out if a switch learns a mac address of a connected device which only sends broadcasts to the switch port (no unicasts). For example one type of attendance terminal...
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Jun 27, 2012
I have an AP, model AIR-LAP1041N-A-K9. How does the AP work? How does the AP broadcast?. Is It a circle and the AP is the center? Does the AP broadcast more front than back? Have any blind spot? I see the datasheet [URL] -
Integrated Antenna
#• 2.4 GHz, gain 4.0 dBi, horizontal beam width 360°
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May 30, 2012
We have a single 4404 that was setup long before I arrived with Guest networks that timeout and other such tweaks. Is there a document somewhere that shows a way to migrate the old settings to a new 5508 that we are purchasing? By the time the 5508 arrives I will have a very small window to setup the unit before a new wing goes live. I need the new unit as we have reached our limit of licensed AP's on the old 4404. It seems like everyone keeps talking about an easy way but no one says how to do it.
I have never setup one of these units before from scratch so I don't know how long it will take.
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Oct 23, 2011
Does WLC 4400 is supported in LMS 4.1 in CiscoView.
When I check device update in admin-system-software center. I don't see any available package for the WLC 4400.
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Sep 24, 2012
We have a new SSID that needs to be added to an AP through a 4400 Controller with software version
7.0.116.0
All AP's are configured as Lightweight.
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Jan 3, 2013
I am configuring an old WLC4400 with V4.2.130.0. I added a new sub-interface for VLAN 50 with proper IP for the subnet and then add the Radius server(Windows server 2008 with NPS) onto WLC4400. I then created new WLAN with WPA+WPA2 Encryption and 802.1x key management and selected the Radius server under AAA for authentication.
Configured the test XP with WPA-Enterprise and PEAP as EAP method. I purposely configured computer to prompt for username and password.
When I try to connect, I did get prompt for username and password. However after that nothing happens. It seems like laptop just keep trying to authenticate.
I checked windows event log and do not see anything under NPS. I know this windows server NPS setup works as it is also the authentication server for our remotevpn.
is there any special option I need to turn on for WLC in order for Radius authentication work? Or is there any known bug with V4.2.130.
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Jun 11, 2012
I am replacing an old 4400 series WLC running version 4.0.179.11 to a new 5508 WLC running version 7.2.110.0.
We currently have 70 x 1131 Access points on the 4400 WLC.
With this upgrade, do i need to upgrade the old 4400 to version 6.0 so the AP's get an up to date IOS or can i directly migrate all AP's over to the new 5508 without any version incompatabilities on the AP's?
I am abit worried that the AP's are running a very old IOS on the 4400 v.4.0.179.11 to go straight to the new 5508 v.7.2.110.0.
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Aug 1, 2011
l need change a wlc 4400 to 5500, but l don´t know what l need back up, and how can I do to join the H Reap APs in the new 5500 WLC because all H Reap APs that l have, are not in the same city , and I understand if l want join AP in the new WLC l need to connect in the same network segment, is it rigth ?
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Mar 14, 2011
I have some problems integrating WLC 4400 with AD using ldap. The the WLC LDAP Server and W LAN for Web Authentication are configured according to [URL].
when I connect to SSID the laptop is given the ip address, then I can see the web-page with lo gin and password - it seems to be OK, but when I enter lo gin and pass it tells me, that it's incorrect.
The attributes of the LDAP server:
Server Address *.*.*.*
Port Number 389
User Base DN ou=ORG,dc=domain,dc=local
User Attribute userPrincipalName
User Object Type Person
the test user is located in AD folder ORG, but this folder also contains a lot of sub trees
There are some questions:
1) Is it obligatory to use value "Authenticated" in the Simple Bind option or it can be Anonymous?
2) Is the Controller capable for searching the users located in User Base DN sub trees?
Here is some debug from the controller:
667: LDAP_CLIENT: UID Search (base=.....
669: LDAP_CLIENT: ldap_search_ext_s returns 0 85
669: LDAP_CLIENT: Returned 1 msgs including 0 references
[Code]....
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Sep 25, 2012
I current have 20 x cisco AP 1142 with WLC 4400 series, I'm looking for newer/latest Cisco AP for expansion. I was looking at Cisco 3500 series but not sure how good/flexible they are when comparing to 1142 and other AP series.
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Jan 24, 2011
I have a 4400 WLC for 100APs running the 7.0.98.0software version. Now, only 48 APs are joined, and the WLC dont accept new joins. The log below are from my WLC but appear for all others APs:
%LOG-6-Q_IND: spam_lrad.c:1440 Discarding discovery request in LWAPP from AP 00:3a:98:ae:e3:f0 supporting CAPWAP%LWAPP-6-CAPWAP_SUPP_VER: spam_lrad.c:1440 Discarding discovery request in LWAPP from AP 00:3a:98:ae:e3:f0 supporting CAPWAP%CAPWAP-3-TX_ERR: capwap_ac_sm.c:1966 Failed to transmit discovery response to AP 00:3a:98:ae:e3:f0%CAPWAP-3-ENCODE_ERR: capwap_ac_sm.c:2269 Failed to encode Discovery (code)
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Sep 15, 2012
As per CISCO QoS document URL, IOS from 12.2(13)T support drop command in policy map. But our CISCO ASR 1013 having IOS of Version 15.2(1)S1 doesn't have drop syntax.How can we drop specific application using QoS in ASR 1013 of IOS version 15.2 and higher?,Can I allow few users for a particular application (like P2P) and drop other users based on users source IP?
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May 22, 2012
I having a basic query in troubleshooting E1 link , here im facing packet drop in the link and we are testing by providing local loop and remote loop from the CSU/DSU at local point and at remote point . I have tried ping test while the loop is given at local point and remote point ie i have pinged my local serial interface IP address (eg 10.0.0.1 -local & 10.0.0.2 -remote ) in Remote Loop i could see no errors and drops and also the traffic on the interface output and input is the same(eg input rate 1000bps and output rate 1000bps) .My query is that when i am pinging the local interface IP does the icmp packet travels till the loop point and comes to the same interface(like a boomerang) .
ICMP packet
->->->->->->->->->->->->->->->
R1 Local CSU/DSU | Remote CSU/DSU (remote loop given )
O-----------O------------------------------O |--------------------------------------O R2
<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-|
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May 8, 2013
We've had Cisco 1252 APs running on PoE (3750E gives the port 20W of power) for well over 3 years with no problems. These have not been touched, moved or configured since they went in.
All of sudden we're seeing these APs drop off the network and investigations reveal that they show as IEEE PD when you do a show power inline.
Some of these are slated to be replaced after the ports were changed, the cables replaced and port reset (also an old spare 1252 was inserted in to one of these ports and it came up fine, indicating an issue with these APs).
If it was one or two then maybe I could believe that the APs are at fault, but with so many (10 so far) I'm struggling to believe it. Could it be the code we are running on the switches? We are running 12.2(50)SE3.
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Jul 18, 2011
my Cisco anyconnect VPN clients are able to access all of my internal networks accept to another site which has a IPSEC VPN site-to-site. The Cisco ASA forwards the packets destined to this remote site to a Cisco router which NATS the source addresses (pool 10.17.252.0/24) to a 192.168.46.0 range. The remote network is 155.x.x.x which I have included in my internal subnets object-group and added a route on the ASA to route it inside.
I have configured NAT so that it does not NAT anything from the anyconnect client range to the internal subnets. I am using version 8.3(2) and the NAT rule is:
nat (outside,inside) source static SSLPOOL SSLPOOL destination static INSIDE_NETS INSIDE_NETS
I can still not connect to the remote side via the VPN; when I run this throught packet-tracer, I get a failure on phase 6:
Type: WEBVPN-SVC
Subtype: in
Result: DROP
Result:Drop reason: (acl-drop) Flow is denied by configured rule
I cant seem to work out what it is that is blocking it. The NAT rule above is rule 1 in case some other NAT rule is causing the issue..
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Apr 2, 2012
i see that the wifi on the SRP Freezes. If i am connected via lan, i can still surf the net or connect to another access point on the network and surf. But the wiress devides connected to the SRP loose connectivity even though it shows that the wifi connection is connected. I am running on the latest firmware. this problem has started occcuring only recently
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Apr 14, 2013
I know that 255.255.255.255 is the broadcast address to send message to all hosts that are in LAN. what i want here is, i want to send a mail to all hosts using this address.
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May 28, 2012
Is it normal for a pc to send broadcast to ip address that don't really exist? I am using wireshark to sniff my company's network activity and im seeing something like this.who has 192.168.2.102 tell 192.168.2.235
who has 192.168.2.103 tell 192.168.2.235
who has 192.168.2.104 tell 192.168.2.235
who has 192.168.2.105 tell 192.168.2.235
who has 192.168.2.106 tell 192.168.2.235
but ip address 192.168.2.102 - 192.168.2.106 are currently not being in use..
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Jul 5, 2011
I'm trying to get a wireless N-router and a N-adapter for a room outside the range of a G router. But their are two laptops at the house. They both use g adapters. Can the N router broadcast both N and G signal at the same time? So all adapters in the house can connect to the router. Does broadcasting both signals degree the range of the N broadcast making the an additional N adapter useless?
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May 16, 2011
My router has been having major problems lately [Well, for a while now]. Before, it would make all my machines [1 PC, 2 Laptops] disconnect from the internet briefly and reconnect. This doesn't impact browsing, video watching, etc. It wouldn't even say I was disconnected. However, I know it was disconnecting because programs like AIM, MSN, and multiple video games would say I lost connection. For example, MSN would disconnect and take me out of any conversations and reconnect a second later. Friends tell me that I keep going offline and then online.
I read somewhere I should change my channel, so I did and still got the same problem. Furthermore, my router/pc are literally right next to each other. Then I read elsewhere I should do a factory reset on my router by holding the reset button for a while. So I did and it reset. It started broadcasting as an unsecured network, so I was going to secure it.
1. Log in via http://192.168.0.1 (default "username: Admin and no pass")
2. Go to setup tab ----> internet ----> internet connection wizard2.1 CHANGE PASSWORD ! click next 2.2 chose time zone (you know where you are) 2.3 Configure your Internet Connection DHCP Connection (Dynamic IP Address)Choose this if your Internet connection automatically provides you with an IP Address. Most Cable Modems use this type of connection. 2.4. press "clone your computer's MAC address" ; hostname: 'your computer name in ubuntu' ( mine is "grobar" yours is ..... )
3. Go to setup tab ----> wireless settings ----> Wireless Network Setup Wizard (after this we're gonna do manual settings)
3.1 give your network a name= SSID (e.g. 'grobar')
3.2.Automatically assign a network key (Recommended) and chose WAP or WAP2
3.3 Write down the network key!!! Or do printscr and save this page.
4. Go to setup tab ----> wireless settings ---->Manual Wireless Network Setup 4.1 Wireless Network SettingsEnable Wireless : ALWAYS Wireless Network Name : (Also called the SSID) the name you gave in 3.1 802.11 Mode : chose "mixed 802.11n,g and b" Enable Auto Channel Scan : YES Wireless Channel : AUTO Transmission Rate : BEST (Mbit/s) Channel Width : AUTO 20/40 MHz Visibility Status : !!!Invisible!!! (so that no outsiders know your SSID except you) So after I finish the Internet Connection Wizard [Setting up Password etc], the http://192.168.0.1/ page asks me to click "Connect" so it can reboot the router with the settings. When I do so, the router turns off with the power icon being orange. After about 15 seconds or so, the broadcasting icon, power icon, and PC1 icon all turn green. However, there is a globe icon on it as well and that is ORANGE.
Regardless of power cycling, redoing the process, etc. it stays orange. None of my machines can connect to it. The only way I can connect again to the router is if I do a reset again (By holding the reset button). But then, I am unsecured and live in an apartment. I would like to add that the above process is the one I did previously and it worked fine. But then I had to reset the router and a similar problem occurred but I managed to fix it somehow and the first problem I talked about started happening (Reconnecting and disconnecting). Furthermore, when I go to "Connect to a Network" one of the old SSIDs I created for the router is still there regardless of the router status (Offline, Not connected, etc). I am typing this by connecting my PC directly to my modem. Router Information: D-Link DIR-615 300N
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Aug 30, 2012
I am having issues recieving UDP response from my smart lighting control, i can here it in the same town but not from overseas..internal ip address 192.168.0.3 port 6000 it hears my commands from overseas i just cant here its response.
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Mar 31, 2012
I am considering a toshiba tv with wifi. i want to limit the cables up the wall and would like to broadcast my cable to my tv by wifi
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